The 19-year-old left-back has impressed in his 12 appearances so far this season, graduating up from the Under-23s squad for which he played last season.
The former Huddersfield apprentice explained to iFollow Iron: "It's great to get it over the line and sorted. I'm just happy to focus on my football now.
"It's a two-and-half-year deal and there is plenty of time for me to develop. I'm always looking to improve my game so those two extra seasons give me a lot of time to better myself and improve as a player.
"It's come at a nice time, as an early Christmas present. There will be a lot of games to get stuck into (in the festive period) and it's nice to get this sorted early.
"I wasn't expecting this (at the start of the season). I was just hoping to take my chance when it came and I think I've done that, especially in the last few games I've played, helping the team and I just want to kick on more.
"You have to take your chance with both hands. I'm still young but it's a great opportunity for me. I'm excited about it and it's back to focusing on the football again."
Talking about targets between now and the end of the season, he continued: "I want to play as many games as I can really. I'm still new to League Two and have only played a handful of matches.
"I'm looking to play as much as possible. There are lots of games left and more opportunities to improve and push on as a team.
"I've recovered now (after being rested last week following the busy run of games) and feel strong and ready to go on Saturday.
"We've just had a busy run and there are more coming up. We're going to focus on each game as it comes.
"Recovery was tough on the body and the mind, playing Saturday-Tuesday back to back. (The fixtures calming down in the New Year in comparison) will slow things down a little bit, be better for the whole team and we'll be able to regroup well."
See much more from Mason O'Malley on iFollow Iron.