UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'sLDj2x2tMcqySAbNTj8gZkPdyjBp/WzLygATFux74sA=' 
WHERE 
  key_id = '51f2ad3a6fda7de048fd3366c8e4c2a7fd8273968f0c0965176c617684b9f5e7' 
  AND (
    token = 'sLDj2x2tMcqySAbNTj8gZkPdyjBp/WzLygATFux74sA=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )