Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '006f496dd4a249a08317ed9a586c2f081bfc7555cb8b920061f999587d1adcfd' 
  AND token = 'Ux6e6l6c/UqvlcHghK1guV4WIEzC0h4Y9gzzF0pUUq8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}