UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'gsEr2rSamTtQa3nzq7bqHBUeQSVfcA6no5X3CEP7YWg=' 
WHERE 
  key_id = '673f06ee3844b7c980b7ff9c5ca8bded0d066000638338e260a0a8d0532291e4' 
  AND (
    token = 'gsEr2rSamTtQa3nzq7bqHBUeQSVfcA6no5X3CEP7YWg=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )