UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'Sm/tS1F0HcrmIzoFTBOUAXRGYTrbUd7WUGKUWzXJ/sI=' 
WHERE 
  key_id = '764846e81e645b01ac488d1999884c66c1b0684eafd993489c9e74d19528a8c3' 
  AND (
    token = 'Sm/tS1F0HcrmIzoFTBOUAXRGYTrbUd7WUGKUWzXJ/sI=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )