SELECT 
  cscart_products.* 
FROM 
  cscart_products 
WHERE 
  cscart_products.product_id IN (
    10361, 10381, 10335, 10362, 10336, 10363, 
    10337, 10364, 10338, 10365, 10339, 
    10366, 10340, 10367, 10341, 10368, 
    10342, 12565, 10293, 10296
  )

Query time 0.00056

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": 20,
      "filtered": 100,
      "index_condition": "cscart_products.product_id in (10361,10381,10335,10362,10336,10363,10337,10364,10338,10365,10339,10366,10340,10367,10341,10368,10342,12565,10293,10296)"
    }
  }
}