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 (
    189, 192, 168, 188, 183, 813, 814, 749, 
    203, 196, 165, 167, 701, 702, 708, 786, 
    221, 166, 184, 751, 856, 193, 789, 791, 
    793, 224, 160, 228, 727, 728, 729, 730, 
    731, 800, 806, 169, 200
  ) 
  AND cscart_product_review_prepared_data.storefront_id = 0

Query time 0.00026

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost": 0.0110178,
    "nested_loop": [
      {
        "table": {
          "table_name": "cscart_product_review_prepared_data",
          "access_type": "ALL",
          "possible_keys": ["PRIMARY"],
          "loops": 1,
          "rows": 1,
          "cost": 0.0110178,
          "filtered": 100,
          "attached_condition": "cscart_product_review_prepared_data.storefront_id = 0 and cscart_product_review_prepared_data.product_id in (189,192,168,188,183,813,814,749,203,196,165,167,701,702,708,786,221,166,184,751,856,193,789,791,793,224,160,228,727,728,729,730,731,800,806,169,200)"
        }
      }
    ]
  }
}