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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 (
    3916, 3917, 3918, 3919, 3920, 3921, 3968, 
    3969, 3970, 3971, 3972, 3973, 3974, 
    4020, 4021, 4022, 4023, 4024, 4025, 
    4026, 4094, 4095, 4096, 4097
  ) 
  AND cscart_product_review_prepared_data.storefront_id = 0

Query time 0.00027

JSON explain

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