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 (
    280, 282, 278, 20, 119, 100, 46, 204, 45, 
    68, 29, 6, 8, 14, 9, 10, 19, 21, 7, 27, 124, 
    50, 51, 49, 48, 54, 44, 194, 137, 153, 
    164, 236, 234, 150, 151, 178, 181, 248, 
    65, 64, 63, 62, 66, 140, 141, 144, 143, 
    142, 13
  ) 
  AND cscart_product_review_prepared_data.storefront_id = 0

Query time 0.00039

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost_info": {
      "query_cost": "12.56"
    },
    "table": {
      "table_name": "cscart_product_review_prepared_data",
      "access_type": "ALL",
      "possible_keys": [
        "PRIMARY"
      ],
      "rows_examined_per_scan": 52,
      "rows_produced_per_join": 49,
      "filtered": "94.23",
      "cost_info": {
        "read_cost": "2.77",
        "eval_cost": "9.80",
        "prefix_cost": "12.57",
        "data_read_per_join": "784"
      },
      "used_columns": [
        "product_id",
        "storefront_id",
        "average_rating",
        "reviews_count"
      ],
      "attached_condition": "((`danishecarter_25_march`.`cscart_product_review_prepared_data`.`storefront_id` = 0) and (`danishecarter_25_march`.`cscart_product_review_prepared_data`.`product_id` in (280,282,278,20,119,100,46,204,45,68,29,6,8,14,9,10,19,21,7,27,124,50,51,49,48,54,44,194,137,153,164,236,234,150,151,178,181,248,65,64,63,62,66,140,141,144,143,142,13)))"
    }
  }
}