SELECT 
  cscart_products.* 
FROM 
  cscart_products 
WHERE 
  cscart_products.product_id IN (
    36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 
    47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 
    57, 58, 59, 60, 62, 63, 64, 65, 67, 68, 
    69
  )

Query time 0.00119

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "table_name": "cscart_products",
      "access_type": "range",
      "possible_keys": ["PRIMARY"],
      "key": "PRIMARY",
      "key_length": "3",
      "used_key_parts": ["product_id"],
      "rows": 32,
      "filtered": 100,
      "index_condition": "cscart_products.product_id in (36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,62,63,64,65,67,68,69)"
    }
  }
}