Barry Bannan, Harry Gray and Callum Slattery were also among the goals as Wednesday extended their unbeaten run in League One to seven games.

The visitors failed to register a single effort on target and are now without a win in their last four league games.

Wednesday were on top from the start with Gray, Keillor-Dunn and Reece James all threatening.

Wimbledon’s resistance was ended in the 38th minute when Bannan linked up well with Keillor-Dunn before his shot found the net with the aid of a deflection.

Keillor-Dunn made it 2-0 a minute later, sprinting clear through the middle.

Gray added a third goal in the final minute of the half with an impressive finish.

Wednesday went further ahead in the 56th minute when Reece crossed from the left and Slattery applied a close-range finish.

Keillor-Dunn completed the scoring in the 85th minute with a low shot from the left-hand side of the area.

Myles Hippolyte put shots off target either side of the break with Wimbledon’s best chances on their miserable trip north.