UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = '52xQj4Km0ViWQ/hST/TN7kTEWus+9jrlX7OId+bNFYY=' 
WHERE 
  key_id = 'a6608aa3674f02dac6940bc0181b657aa0f7b1529ebf94e71ed8667e658ced7f' 
  AND (
    token = '52xQj4Km0ViWQ/hST/TN7kTEWus+9jrlX7OId+bNFYY=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )