UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'xMhNZyUjq7azKY0WnZ6zYI0wnBGTLCIYErS4l+XCRe0=' 
WHERE 
  key_id = '3978873628fced64127a65e9a7e7a6e2400c8e9bfd31ebe3e50f59bdaa1bb301' 
  AND (
    token = 'xMhNZyUjq7azKY0WnZ6zYI0wnBGTLCIYErS4l+XCRe0=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )