Congressional rules require that at least one member of both the Senate and the House challange the vote of the electoral college for it to be brought to a floor vote. This from the Washington Post:

By law, a protest signed by members of the House and Senate requires both chambers to meet separately for up to two hours to consider it. Lawmakers are allowed to speak for no more than five minutes each. The Senate session lasted just over an hour and ended when the chamber voted 74-1 to uphold Ohio's votes. Boxer was the lone vote.

Doesn't seem like there was much in the way of debate.