SELECT 
  cscart_products.* 
FROM 
  cscart_products 
WHERE 
  cscart_products.product_id IN (
    1901, 1906, 1911, 1918, 1938, 1943, 1951, 
    1959, 1977, 1978, 2002, 2017
  )

Query time 0.00128

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": 12,
      "filtered": 100,
      "index_condition": "cscart_products.product_id in (1901,1906,1911,1918,1938,1943,1951,1959,1977,1978,2002,2017)"
    }
  }
}