UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'icAjgvpbHpyFfmqjHwa3MzRuOPGEvS8jxcFXk9qV+0Q=' 
WHERE 
  key_id = 'b756e792f9438b5443bc73e3af446be3fdbc785fdb4d8ab944fde34999b9084b' 
  AND (
    token = 'icAjgvpbHpyFfmqjHwa3MzRuOPGEvS8jxcFXk9qV+0Q=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )