SELECT 
  `F`.`path`, 
  `PI`.`product_id`, 
  `PI`.`alt` 
FROM 
  `cscart_products__images` AS `PI` 
  LEFT JOIN `files` AS `F` ON `PI`.`watermark_small_file_id` = `F`.`id` 
WHERE 
  `PI`.`product_id` IN (30253, 30257, 8858, 8861, 8864)

Query time 0.00051

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost_info": {
      "query_cost": "21.23"
    },
    "nested_loop": [
      {
        "table": {
          "table_name": "PI",
          "access_type": "range",
          "possible_keys": [
            "product_id"
          ],
          "key": "product_id",
          "used_key_parts": [
            "product_id"
          ],
          "key_length": "3",
          "rows_examined_per_scan": 17,
          "rows_produced_per_join": 17,
          "filtered": "100.00",
          "index_condition": "(`dev2`.`PI`.`product_id` in (30253,30257,8858,8861,8864))",
          "cost_info": {
            "read_cost": "7.21",
            "eval_cost": "1.70",
            "prefix_cost": "8.91",
            "data_read_per_join": "544"
          },
          "used_columns": [
            "product_id",
            "watermark_small_file_id",
            "alt"
          ]
        }
      },
      {
        "table": {
          "table_name": "F",
          "access_type": "eq_ref",
          "possible_keys": [
            "PRIMARY"
          ],
          "key": "PRIMARY",
          "used_key_parts": [
            "id"
          ],
          "key_length": "4",
          "ref": [
            "dev2.PI.watermark_small_file_id"
          ],
          "rows_examined_per_scan": 1,
          "rows_produced_per_join": 17,
          "filtered": "100.00",
          "cost_info": {
            "read_cost": "10.62",
            "eval_cost": "1.70",
            "prefix_cost": "21.23",
            "data_read_per_join": "63K"
          },
          "used_columns": [
            "id",
            "path"
          ]
        }
      }
    ]
  }
}

Result

path product_id alt
https://s3.timeweb.cloud/482029f9-prod/products__images/8858_4b5a7530d9fc_%D0%91%D0%BE%D1%80%D1%82%D0%BE%D0%B2%D0%BE%D0%B9_JAC_120.webp 8858
https://s3.timeweb.cloud/482029f9-prod/products__images/8861_199ada47c50f_%D0%91%D0%BE%D1%80%D1%82%D0%BE%D0%B2%D0%BE%D0%B9_JAC_N90.webp 8861
https://s3.timeweb.cloud/482029f9-prod/products__images/8864_0ac15e7c700f_%D0%91%D0%BE%D1%80%D1%82%D0%BE%D0%B2%D0%BE%D0%B9_JAC_200__1_.webp 8864
https://s3.timeweb.cloud/482029f9-prod/products__images/30253_5889023f923c_30254_030095af6b77_0_9ec508d6e314_IMG_4564.webp 30253
https://s3.timeweb.cloud/482029f9-prod/products__images/30253_f94880e0fc5c_30254_e8d5e4685091_0_093d4fd1e698_IMG_4559.webp 30253
https://s3.timeweb.cloud/482029f9-prod/products__images/30253_53506a914c8f_30254_82c5370a6358_0_6ad98424e8ef_IMG_4558.webp 30253
https://s3.timeweb.cloud/482029f9-prod/products__images/30253_d6c5c5c1fa01_30254_25443b0561e3_0_13255866a65c_IMG_4562.webp 30253
https://s3.timeweb.cloud/482029f9-prod/products__images/30253_dfbc6af8056a_30254_8944f4648baf_0_399a69020734_IMG_4563.webp 30253
https://s3.timeweb.cloud/482029f9-prod/products__images/30253_f004b8f6784a_30254_86e73316b83d_0_e71c37b3f607_IMG_4561.webp 30253
https://s3.timeweb.cloud/482029f9-prod/products__images/30253_3aefe8ba9648_30254_ad44cfe285b4_0_2d5d5ae49d73_IMG_4566.webp 30253
https://s3.timeweb.cloud/482029f9-prod/products__images/30253_4f458a21ef7e_30254_fad5a9bbb232_0_e363db966b8a_IMG_4560.webp 30253
https://s3.timeweb.cloud/482029f9-prod/products__images/30253_d5486ab7aff2_30254_ebeca56b35f7_0_f232e5324486_IMG_4565.webp 30253
https://s3.timeweb.cloud/482029f9-prod/products__images/30257_7c4b193d0ce8_30258_1cb88a5f32a7_0_7492e7de7aed_IMG_4580.webp 30257
https://s3.timeweb.cloud/482029f9-prod/products__images/30257_867f47caff3e_30258_958825508a64_0_8b2c64889440_IMG_4579.webp 30257
https://s3.timeweb.cloud/482029f9-prod/products__images/30257_7ba4e040c05a_30258_4f5718079500_0_27fe7c021880_IMG_4581.webp 30257
https://s3.timeweb.cloud/482029f9-prod/products__images/30257_8454d14a5ee4_30258_5d44aeadb639_0_aead58b3ea02_IMG_4582.webp 30257
https://s3.timeweb.cloud/482029f9-prod/products__images/30257_eab9b35b49c5_30258_21276c2b0e37_0_e6170aa2fbbc_IMG_4583.webp 30257