UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = '+0LRnD0+dkYADvYbuSddMaJGsJdSKg3HJgQ02cmqvDs=' 
WHERE 
  key_id = '51519ad9754ed060fa790f83cd6e7ff23a46badda13c3df8eabc65f6559e4a20' 
  AND (
    token = '+0LRnD0+dkYADvYbuSddMaJGsJdSKg3HJgQ02cmqvDs=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )