SELECT 
  cscart_products.* 
FROM 
  cscart_products 
WHERE 
  cscart_products.product_id IN (
    2172, 2175, 2170, 2166, 2173, 2174, 12742, 
    2600, 2597, 2598, 2357, 2807, 12976, 
    2305, 2304, 11806, 12740, 11117, 11787, 
    2587, 2588, 2591, 2590, 2553, 2589, 
    2581, 2592, 2576, 2685, 2686
  )

Query time 0.00053

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": 30,
      "filtered": 100,
      "index_condition": "cscart_products.product_id in (2172,2175,2170,2166,2173,2174,12742,2600,2597,2598,2357,2807,12976,2305,2304,11806,12740,11117,11787,2587,2588,2591,2590,2553,2589,2581,2592,2576,2685,2686)"
    }
  }
}