UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'k6YJ21QaFzMdDxrxN699zjvVIc0gWQP7JDy4cvnfMzw=' 
WHERE 
  key_id = '851689b7a1352687b2c00ec30b24ef91af3d19423b3679732b3c8bd83119a0f7' 
  AND (
    token = 'k6YJ21QaFzMdDxrxN699zjvVIc0gWQP7JDy4cvnfMzw=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )