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 (
    145, 117, 219, 222, 220, 221, 113, 157, 
    68, 29, 6, 8, 14, 9, 10, 19, 21, 50, 51, 
    49, 48, 54, 153, 164, 248, 65, 64, 63, 
    62, 66, 140, 141
  ) 
  AND cscart_product_review_prepared_data.storefront_id = 0

Query time 0.00034

JSON explain

{
  "query_block": {
    "select_id": 1,
    "nested_loop": [
      {
        "table": {
          "table_name": "cscart_product_review_prepared_data",
          "access_type": "ALL",
          "possible_keys": ["PRIMARY"],
          "rows": 52,
          "filtered": 61.53845978,
          "attached_condition": "cscart_product_review_prepared_data.storefront_id = 0 and cscart_product_review_prepared_data.product_id in (145,117,219,222,220,221,113,157,68,29,6,8,14,9,10,19,21,50,51,49,48,54,153,164,248,65,64,63,62,66,140,141)"
        }
      }
    ]
  }
}

Result

product_id average_rating reviews_count
8 4.00 1
248 4.33 3