SELECT 
  * 
FROM 
  `cscart_companies` 
WHERE 
  `company_id` = 302

Query time 0.00034

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost_info": {
      "query_cost": "1.00"
    },
    "table": {
      "table_name": "cscart_companies",
      "access_type": "const",
      "possible_keys": [
        "PRIMARY"
      ],
      "key": "PRIMARY",
      "used_key_parts": [
        "company_id"
      ],
      "key_length": "4",
      "ref": [
        "const"
      ],
      "rows_examined_per_scan": 1,
      "rows_produced_per_join": 1,
      "filtered": "100.00",
      "cost_info": {
        "read_cost": "0.00",
        "eval_cost": "0.10",
        "prefix_cost": "0.00",
        "data_read_per_join": "7K"
      },
      "used_columns": [
        "company_id",
        "status",
        "company",
        "official",
        "lang_code",
        "street",
        "address",
        "city",
        "state",
        "country",
        "zipcode",
        "email",
        "phone",
        "url",
        "storefront",
        "secure_storefront",
        "entry_page",
        "redirect_customer",
        "countries_list",
        "timestamp",
        "shippings",
        "logos",
        "request_user_id",
        "request_account_name",
        "request_account_data",
        "tax_number",
        "pre_moderation",
        "pre_moderation_edit",
        "pre_moderation_edit_vendors",
        "plan_id",
        "plan_time",
        "plan_start",
        "yandex_checkout_shopid",
        "yandex_checkout_marketplace_fee",
        "yandex_checkout_commission_type",
        "yandex_checkout_agent_type",
        "saved_shippings_state",
        "referral_id",
        "access_reward_points",
        "max_bonus_reward_points",
        "need",
        "min_percent",
        "max_percent",
        "min_day",
        "max_day",
        "prepayment",
        "limit_price",
        "region_id",
        "city_id",
        "company_status_id",
        "check_status_time",
        "general_rating",
        "is_premium",
        "uniquePage",
        "lat",
        "lon",
        "is_available"
      ]
    }
  }
}