UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'mGmdenP3/+MESLWkMJmuC3STP2FjIEoRE85nl6P9WRM=' 
WHERE 
  key_id = 'f42b2fa0dcfb8a740a38e5540ff7bfebc2075c31a8e6a08d6072816301a4d7aa' 
  AND (
    token = 'mGmdenP3/+MESLWkMJmuC3STP2FjIEoRE85nl6P9WRM=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )