The Hoops secured a stunning 8-1 victory over Hamilton to extend their lead at the top of the Scottish Premiership table.
The 25-year-old had not started a game for the Hoops since November before the clash against the Accies, but justified his inclusion by helping the side storm to an emphatic win at Parkhead.
And Mackay-Steven explained that while it had been tough to wait for his chance, he has still enjoyed his time with the club and hopes to make more of an impact in the future.
"I got the nod to start and really enjoyed it so hopefully that can continue," he told the official website.
"I knew it'd be tough. Last season, signing for a big club like Celtic, I knew there would be spells where if you're out the team and they do well, like we've been doing, it'd be tough being out and watching from the sidelines.
"But I've enjoyed every minute I'm here. I'm just trying to work as hard as I can in training and catch the manager's eye, and hopefully I've done that."
While the former Dundee United man was not able to get on the scoresheet in the win - which perhaps is not a surprise given that he has been on the fringes of the side in recent weeks - he was able to bag an assist for Leigh Griffiths' first goal that put the Bhoys 4-0 ahead after just 22 minutes.
And Mackay-Steven will be hoping that Deila decides to continue with the same side for their upcoming clash with St Johnstone, so the winger can begin to stake a claim for a permanent spot in the team, and perhaps really begin to show why Celtic brought him to the club last January.