UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'I6ZFdKvJyDTULVw6V34gqdWgsoEfVNPuZ+TuqBhahhA=' 
WHERE 
  key_id = '456293d5564b4ad90c5ffd173d76afcf6a3d6e040f4c0d53721cb23537e52bb4' 
  AND (
    token = 'I6ZFdKvJyDTULVw6V34gqdWgsoEfVNPuZ+TuqBhahhA=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )