The former Rangers man has not pulled on a Dark Blue jersey since Craig Levein's side struggled to beat Lichtenstein back in September 2010.
But his double against Hearts in Saturday's 2-0 Scottish Premiership win for Killie proved he has rediscovered his form.
His scoring touch never went away but Boyd has added work-rate and a clever understanding of how his team-mates link up to the overall package and current Scots boss Gordon Strachan will surely now be taking notice with friendlies against the US and Norway to come next month.
The Rugby Park striker certainly hopes so but despite sitting out international action for the past 36 months, he does not think he will fundamentally have to change his game to win a recall.
Boyd said: "Have I changed my game? I don't think so. I'm the same player as I was before. I have maybe added a bit more to my game in terms of I'm clever enough to drop into holes instead of charging about.
"But I've always said I'm not going to be the type of player who charges about for 30 or 40 yards. There are other players who can do that but it's not my game. I'm paid to put the ball in the net and I will do that as good as anyone.
"I've given myself a good chance of getting into the Scotland squad with the goals I've scored recently and that is all I can do. I won't be too upset if I don't get a call-up.
"I've always said I want to get back to playing regularly for 90 minutes and scoring goals and I feel as if I'm getting there now and we will see what happens in the coming months."
Boyd struck the opener against the Jambos at Rugby Park after 16 minutes when he took advantage of Danny Wilson's slip before dummying Jordan McGhee in the box as he then fired past keeper Jamie MacDonald.
His second goal arrived 19 minutes after the restart as Boyd gathered Jeroen Tesselaar's long free-kick after Brad McKay was caught ball watching underneath.
The striker's first touch took him towards the by-line but his clipped finish over the keeper summed up his soaring confidence after six goals in 10 outings this term.
"When you are playing in a team that has got three or four people that are going to create chances then it is up to you as a striker to get in the box and try to take them," said Boyd.
"Against Hearts, I managed to get two but being critical of myself, I should probably have had more.
"That's the way I am, I want to score as many as I can. But it was a great team performance. Hearts couldn't cope with us in the final third."
The defeat leaves Hearts back where they started at the start of the campaign, 15 points behind St Mirren.
They had trimmed the gap to just nine at the start of October but while the Buddies and Killie have picked up form, the Jambos have now collected just one point from their last seven outings.
Now defender Kevin McHattie admits morale at the administration-hit Gorgie side is lower than ever.
"It's disappointing to come here and leave with nothing," he said. "It's hard to take. Confidence is low in the camp but the gaffer is working hard to turn things around and hopefully he can pull it off.
"But we have got the derby game with Hibs in the League Cup to come on Wednesday and hopefully if we win that we can be back and flying again.
"It's a good game to have now because derby games take care of themselves. Form doesn't count for much and it's just about who comes out on top on the day."
- Sports & Recreation