SELECT 
  cscart_products.* 
FROM 
  cscart_products 
WHERE 
  cscart_products.product_id IN (
    49164, 49230, 28159, 43817, 47655, 46982, 
    46694, 5448, 41007, 47853, 46170, 48813, 
    36234, 49550, 48472, 49209
  )

Query time 0.00170

JSON explain

{
  "query_block": {
    "select_id": 1,
    "nested_loop": [
      {
        "table": {
          "table_name": "cscart_products",
          "access_type": "range",
          "possible_keys": ["PRIMARY"],
          "key": "PRIMARY",
          "key_length": "3",
          "used_key_parts": ["product_id"],
          "rows": 16,
          "filtered": 100,
          "index_condition": "cscart_products.product_id in (49164,49230,28159,43817,47655,46982,46694,5448,41007,47853,46170,48813,36234,49550,48472,49209)"
        }
      }
    ]
  }
}