In the weeks before the virus took hold across the world, Alli posted a Snapchat clip in which he made fun of an Asian man in an airport departure lounge in February.
The England international was shown wearing a face mask and the video had the title: "Corona whattt, please listen with volume".
The video cut to an unsuspecting man of Asian appearance before panning to a bottle of antiseptic hand wash, underneath which appeared the caption: "This virus gonna have to be quicker than that to catch me".
Alli later deleted the post and posted an apology to the Chinese social media network Weibo.
He was charged with misconduct by the FA on February 26 and his case has now been heard.
The one-game suspension means Alli will miss Tottenham's game at home to Manchester United on June 19, their first of the resumed season.