UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'ajA5Ex8ZPCW9rM0t5T/94TuGBORFm/YKdlbuDf8vVWM=' 
WHERE 
  key_id = '39db463566ab44684b2dce526c4969077521a8dad978cd6adc1555af78340176' 
  AND (
    token = 'ajA5Ex8ZPCW9rM0t5T/94TuGBORFm/YKdlbuDf8vVWM=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )