Properly maintained guns should be "wet" - meaning oiled. You, of course, should clean a gun properly before oiling.
That said, if the gun is still visibly wet where it should be that is a good start. If you shot 50 rounds out of it then stored it without cleaning it then I would feel more comfortable field stripping and cleaning before shooting.
However, I have done much the same - shot a gun that had been sitting for a few years without "cleaning" it.
Also note that most manufacturers will give detail in the instructions as to the lube points. S&W usually cautions against over-oiling as the oil can collect debris (lint, dirt). I tend to keep up on the cleaning post-shooting and like seeing wet pistols.