It was a good day for the home team who were ahead as early as the second minute with impressive Wales U18 fly half Angus O'Brien kicking a penalty goal. The lead was doubled on 15 minutes once again thanks to a penalty by O'Brien, whose distribution and kicking out of hand was superb throughout.
Keys were really starting to dominate but the lead they had built up was cut by three points as Quins fly-half Dan Newton kicked what proved to be his side's only points of the game with a straight forward penalty.
The Keys pack then began to take the game to Quins and it was a solid forward performance that saw Quins hooker Richard Wilkes sent to the sin bin. And when a second yellow card arrived, Quins prop and skipper Ian Jones joining Wilkes on the side line, Keys sensed blood. Their advantage didn't last long though as Ryan James also saw yellow for Keys.
So with 14 taking on 13, the opening try finally arrived, Keys winger Kristian Baller, who was lively and dangerous throughout, picking up a loose ball on the halfway line to sprint clear and score under the posts.
O'Brien kicked the easiest of conversions before Tom Lampard was the latest to see yellow.
Despite Keys being a man down, Baller got his second try of the game as he crossed in the corner after a move that had moved from one side of the pitch to the other thanks largely to some slick handling and running from the dangerous Keys back line.
With an 18-3 half time lead, Keys set about securing a bonus point.
Keys' third try came as Nathan Trowbridge finished off a fine move which started with Leon Andrews forcing a turnover after a bone crunching tackle on the half way line.
And as Keys built on their dominance, it seemed almost inevitable that the bonus point try would soon come.
Scott Matthews provided it as Keys went into the off season on the back of a comfortable win.