UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'eM+CkmgFwNWzEjoa9hd8KGBHbnQWBYFA6uFnUDj4by0=' 
WHERE 
  key_id = 'c3e4105ab5fcabd1c9149edbb6fc2234fdd5eb66f547e56cec3dc4a1621d7e7c' 
  AND (
    token = 'eM+CkmgFwNWzEjoa9hd8KGBHbnQWBYFA6uFnUDj4by0=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )