SELECT 
  cscart_product_review_prepared_data.product_id AS product_id, 
  cscart_product_review_prepared_data.average_rating AS average_rating, 
  cscart_product_review_prepared_data.reviews_count AS reviews_count 
FROM 
  cscart_product_review_prepared_data 
WHERE 
  cscart_product_review_prepared_data.product_id IN (
    65891, 65892, 65893, 65894, 65903, 65904, 
    65905, 65906, 65907, 65908, 65994, 
    65996, 65998, 65999, 66000, 66002, 
    66057, 66058, 68990, 68991, 68992, 
    68993, 68994, 68995
  ) 
  AND cscart_product_review_prepared_data.storefront_id = 0

Query time 0.00028

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost_info": {
      "query_cost": "14.01"
    },
    "table": {
      "table_name": "cscart_product_review_prepared_data",
      "access_type": "range",
      "possible_keys": [
        "PRIMARY"
      ],
      "key": "PRIMARY",
      "used_key_parts": [
        "product_id",
        "storefront_id"
      ],
      "key_length": "7",
      "rows_examined_per_scan": 24,
      "rows_produced_per_join": 24,
      "filtered": "100.00",
      "cost_info": {
        "read_cost": "11.61",
        "eval_cost": "2.40",
        "prefix_cost": "14.01",
        "data_read_per_join": "384"
      },
      "used_columns": [
        "product_id",
        "storefront_id",
        "average_rating",
        "reviews_count"
      ],
      "attached_condition": "((`cscart_db`.`cscart_product_review_prepared_data`.`storefront_id` = 0) and (`cscart_db`.`cscart_product_review_prepared_data`.`product_id` in (65891,65892,65893,65894,65903,65904,65905,65906,65907,65908,65994,65996,65998,65999,66000,66002,66057,66058,68990,68991,68992,68993,68994,68995)))"
    }
  }
}