UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'BTZ/AqL/QvHblFNn6S6NYnJwD/XtWj7KWzfqJLUXg+8=' 
WHERE 
  key_id = 'c8a3a21b9bd5e6403a5f3d847600c06ddbf1490365bd004a4050ad7468232091' 
  AND (
    token = 'BTZ/AqL/QvHblFNn6S6NYnJwD/XtWj7KWzfqJLUXg+8=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )