UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'buVrx3xttRZG79LDmNIqldUyXM0LUOJ2rf8qmRefh3o=' 
WHERE 
  key_id = '21950150b40b93d3b8aaf9e8a555b5fde8c953ee2da56a2992e6d3ca276868b9' 
  AND (
    token = 'buVrx3xttRZG79LDmNIqldUyXM0LUOJ2rf8qmRefh3o=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )