It was in the 43rd minute of the match that Keita had to stretch out really on a distance shot.
And just a few minutes before, the goalkeeper had put a stop to a rock-hard free kick that seemed to find its way into the right cross.
The only goal of the match came in the 35th minute when left-back Issiaga Sylla stepped up offensively and set up the winning goal.
The win in the premiere match means that Guinea, with Malmö-born Pa Konate on the bench, tops their group by three points.
The African Championships take place in Cameroon between January 9 and February 6.
CLIP: Kulusevski scored in Juventus' crazy turn (January 9)
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Kulusevski scored in Juventus' crazy turn Photo: TT Nyhetsbyrån