UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = '83DHZRwHZrUcg/2N6PEic8CHJOvwCTKrvzMoVZuOk5I=' 
WHERE 
  key_id = 'c438ef794e77f358d7d5a71e272450d2b33cc8b9fd9220b374c8db6a304e7951' 
  AND (
    token = '83DHZRwHZrUcg/2N6PEic8CHJOvwCTKrvzMoVZuOk5I=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )