The printer can not be wirelessly connected to the AirPort Express (AX) nor the AirPort Extreme base station (AEBS). The only wireless interface available to that printer is Bluetooth which is not supported by Apple's base stations.
You could connect the printer to the USB port on the AX or AEBS. Then print wirelessly. Neither of these devices support scanning though. You can check
iFelix's site to see if there have been incompatibilities reported.
You could get the optional Bluetooth module for that printer and print wirelessly from your Mac to the printer. Assuming that your Mac has Bluetooth or uses a Bluetooth adapter.