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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 (
    208, 209, 210, 211, 212, 213, 215, 217, 
    218, 220, 222, 224, 225, 226, 227, 228, 
    229, 230, 231, 232, 233, 234, 235, 236, 
    237, 238, 239, 242, 243, 78, 79, 80
  ) 
  AND cscart_product_review_prepared_data.storefront_id = 0

Query time 0.00037

JSON explain

{
  "query_block": {
    "select_id": 1,
    "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 (208,209,210,211,212,213,215,217,218,220,222,224,225,226,227,228,229,230,231,232,233,234,235,236,237,238,239,242,243,78,79,80)"
    }
  }
}

Result

product_id	average_rating	reviews_count
228	3.00	2
242	3.50	2
78	4.00	1
224	4.50	2
238	4.00	1
239	3.00	1