Here is a script I have made for autohotkey:
#Persistent
SetTimer, PressTheKey, 480000
Return
PressTheKey:
Send, {w down}
sleep 1
send, {w up}
Return
So what it does? It presses W Key for 1 milisecond every 8 minutes=480000 miliseconds. I put 1 milisecond just to make sure people dont realize...