There are low mileage 10 year old vehicles in great condition out there (125,000 miles is NOT low). My last one was 12 years old with 55,000 miles, I traded it in and it lasted two days. The one before that was 8 years with 45,000 miles, I traded it in and it re-sold before I was out the door with the new vehicle. (my current one is 5-1/2 years and 18,000 miles).... Because I use them just like you plan, as a tow vehicle ONLY!
Look for just about any of the vehicles listed, in good condition and low mileage, then buy it.