Sandbox

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 (
    4197, 4198, 4199, 4200, 4201, 6716, 6715, 
    3117, 3119, 3127, 3133, 3141, 3142, 
    6674, 6680, 6692, 6693, 6701, 6707, 
    1417, 1393, 1394, 1395, 1396
  ) 
  AND cscart_product_review_prepared_data.storefront_id = 0

Query time 0.00021

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "Impossible WHERE noticed after reading const tables"
  }
}