Hi @Mike Merdinianyou can unplug the MAF (Mass Air Flow Sensor) this is the one with the grey connector, just push on the small lever of the connector and it will easily come off.
After that, you can open the lid further and take out the filter element. If you gently tap the filter element on the pavement, 90% of the sand will fall out. A bit of compressed air from your tyre compressor can also help the cleaning.
Afterwards, just put the filter element back, make sure the box is closed properly, and plug in the MAF sensor again, and you are good to go