UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'MnEhHSZizn89L8K8lXTQ6k4h4qDhGN3gr5cLCT/sR4k=' 
WHERE 
  key_id = 'a91f26d349d157a14823b1f225871102f55abaac553d225e5273962ea81a7be7' 
  AND (
    token = 'MnEhHSZizn89L8K8lXTQ6k4h4qDhGN3gr5cLCT/sR4k=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )