UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'RM6f+Xt8fT8yBxFZzESnGRSCRMTx0U3gUTNdXq6L+Ec=' 
WHERE 
  key_id = '6c6e7a3c4633c3e478d300390c7636570811d9b231b099b87dc835eebd128fbe' 
  AND (
    token = 'RM6f+Xt8fT8yBxFZzESnGRSCRMTx0U3gUTNdXq6L+Ec=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )