SELECT 
  `P`.`product_id`, 
  `PFD`.`internal_name` AS `name`, 
  `PFVD`.`variant`, 
  `PFVD`.`variant_id`, 
  `PFD`.`feature_id` 
FROM 
  `cscart_product_features_values` AS `PFV` 
  JOIN `cscart_product_features` AS `PF` ON `PFV`.`feature_id` = `PF`.`feature_id` 
  JOIN `cscart_products` AS `P` ON `P`.`product_id` = `PFV`.`product_id` 
  JOIN `cscart_product_features_descriptions` AS `PFD` ON `PFV`.`feature_id` = `PFD`.`feature_id` 
  JOIN `cscart_product_feature_variants` AS `PFVS` ON `PFVS`.`variant_id` = `PFV`.`variant_id` 
  JOIN `cscart_product_feature_variant_descriptions` AS `PFVD` ON `PFVS`.`variant_id` = `PFVD`.`variant_id` 
WHERE 
  1 
  AND `PF`.`status` = 'A' 
  AND `PFV`.`product_id` IN(
    '32915', '28610', '28612', '28608', 
    '27386'
  )

Query time 0.00107

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost_info": {
      "query_cost": "43.60"
    },
    "nested_loop": [
      {
        "table": {
          "table_name": "P",
          "access_type": "range",
          "possible_keys": [
            "PRIMARY",
            "cscart_products_product_id_index"
          ],
          "key": "cscart_products_product_id_index",
          "used_key_parts": [
            "product_id"
          ],
          "key_length": "3",
          "rows_examined_per_scan": 5,
          "rows_produced_per_join": 5,
          "filtered": "100.00",
          "using_index": true,
          "cost_info": {
            "read_cost": "0.76",
            "eval_cost": "0.50",
            "prefix_cost": "1.26",
            "data_read_per_join": "37K"
          },
          "used_columns": [
            "product_id"
          ],
          "attached_condition": "(`dev2`.`P`.`product_id` in ('32915','28610','28612','28608','27386'))"
        }
      },
      {
        "table": {
          "table_name": "PFV",
          "access_type": "ref",
          "possible_keys": [
            "PRIMARY",
            "fl",
            "variant_id",
            "product_id",
            "fpl",
            "idx_product_feature_variant_id"
          ],
          "key": "product_id",
          "used_key_parts": [
            "product_id"
          ],
          "key_length": "3",
          "ref": [
            "dev2.P.product_id"
          ],
          "rows_examined_per_scan": 6,
          "rows_produced_per_join": 30,
          "filtered": "100.00",
          "using_index": true,
          "cost_info": {
            "read_cost": "2.57",
            "eval_cost": "3.06",
            "prefix_cost": "6.89",
            "data_read_per_join": "23K"
          },
          "used_columns": [
            "feature_id",
            "product_id",
            "variant_id"
          ]
        }
      },
      {
        "table": {
          "table_name": "PF",
          "access_type": "eq_ref",
          "possible_keys": [
            "PRIMARY",
            "status"
          ],
          "key": "PRIMARY",
          "used_key_parts": [
            "feature_id"
          ],
          "key_length": "3",
          "ref": [
            "dev2.PFV.feature_id"
          ],
          "rows_examined_per_scan": 1,
          "rows_produced_per_join": 24,
          "filtered": "80.46",
          "cost_info": {
            "read_cost": "7.65",
            "eval_cost": "2.46",
            "prefix_cost": "17.61",
            "data_read_per_join": "38K"
          },
          "used_columns": [
            "feature_id",
            "status"
          ],
          "attached_condition": "(`dev2`.`PF`.`status` = 'A')"
        }
      },
      {
        "table": {
          "table_name": "PFVS",
          "access_type": "eq_ref",
          "possible_keys": [
            "PRIMARY"
          ],
          "key": "PRIMARY",
          "used_key_parts": [
            "variant_id"
          ],
          "key_length": "3",
          "ref": [
            "dev2.PFV.variant_id"
          ],
          "rows_examined_per_scan": 1,
          "rows_produced_per_join": 24,
          "filtered": "100.00",
          "using_index": true,
          "cost_info": {
            "read_cost": "6.16",
            "eval_cost": "2.46",
            "prefix_cost": "26.23",
            "data_read_per_join": "37K"
          },
          "used_columns": [
            "variant_id"
          ]
        }
      },
      {
        "table": {
          "table_name": "PFD",
          "access_type": "ref",
          "possible_keys": [
            "PRIMARY"
          ],
          "key": "PRIMARY",
          "used_key_parts": [
            "feature_id"
          ],
          "key_length": "3",
          "ref": [
            "dev2.PFV.feature_id"
          ],
          "rows_examined_per_scan": 1,
          "rows_produced_per_join": 24,
          "filtered": "100.00",
          "cost_info": {
            "read_cost": "6.16",
            "eval_cost": "2.49",
            "prefix_cost": "34.88",
            "data_read_per_join": "68K"
          },
          "used_columns": [
            "feature_id",
            "internal_name"
          ]
        }
      },
      {
        "table": {
          "table_name": "PFVD",
          "access_type": "ref",
          "possible_keys": [
            "PRIMARY"
          ],
          "key": "PRIMARY",
          "used_key_parts": [
            "variant_id"
          ],
          "key_length": "3",
          "ref": [
            "dev2.PFV.variant_id"
          ],
          "rows_examined_per_scan": 1,
          "rows_produced_per_join": 24,
          "filtered": "100.00",
          "cost_info": {
            "read_cost": "6.23",
            "eval_cost": "2.50",
            "prefix_cost": "43.60",
            "data_read_per_join": "105K"
          },
          "used_columns": [
            "variant_id",
            "variant"
          ]
        }
      }
    ]
  }
}

Result

product_id name variant variant_id feature_id
28608 Двигатель Weichai 12754 735
28608 Мощность двигателя, л.с. 185 9338 737
28608 Габариты техники д.ш.в., мм 99500 x 2550 x3500 14294 738
28608 Вылет стрелы, мм 10700 14293 743
28608 Колесная формула 4x2 8752 744
28608 Экологический стандарт Евро-5 9138 749
28608 Страна производитель Китай 9730 758
28610 Двигатель Weichai WP4 14292 735
28610 Мощность двигателя, л.с. 185 9338 737
28610 Габариты техники д.ш.в., мм 9900 x 2550 x 3300 14291 738
28610 Вылет стрелы, мм 7900 14290 743
28610 Колесная формула 4x2 8752 744
28610 Экологический стандарт Евро-5 9138 749
28610 Страна производитель Китай 9730 758
28612 Двигатель Weichai 12754 735
28612 Мощность двигателя, л.с. 185 9338 737
28612 Габариты техники д.ш.в., мм 9900 x 2550 x 3400 14295 738
28612 Вылет стрелы, мм 11000 10521 743
28612 Колесная формула 4x2 8752 744
28612 Экологический стандарт Евро-5 9138 749
28612 Страна производитель Китай 9730 758
32915 Двигатель WEICHAI, WP4.1NQ190E5 14060 735
32915 Мощность двигателя, л.с. 190 9363 737
32915 Грузоподъемность, кг 4200 14592 741
32915 Вылет стрелы, мм 11000 10521 743
32915 Колесная формула 4x2 8752 744
32915 Шины 8.25R20*7 14593 745
32915 Экологический стандарт Евро-5 9138 749
32915 Страна производитель Китай 9730 758
32915 Максимальная высота подъема,м 11 14591 833