Here's what I do to prevent this handling issue, but also reduce toast sweat.
1) Fold a paper towel in half, then in half again (if using the select-a-size style, use two sheets).
2) Wet the paper towel so it is wet, but not dripping.
3) Place the wet paper towel on the bottom of the microwave in the center.
4) Place your plate directly over the paper towel, with the area you will place your toast over the towel.
5) Heat for 45 seconds.
The steam from the paper towel heats the specific area where the toast will sit, but the rest of the plate remains noticeably cooler. You do have to dry the plate with a towel when doing this, but it's relatively simple. Just don't let the water drip on you; it's hot.