The 125 is for a lifetime permit. In Indiana, it's as long as you haven't been convicted of a felony, a misdemeanor involving violence, or they have reason to believe you abuse drugs or alcohol (Arrest / conviction within, I believe, 4 years?).
Feel free to correct if I missed/misquoted anything, just what I remember from when I got mine. Didn't have any of that to worry about, so I just glanced over most of it.