Yes, that means it's running on 1-min candles, just like having a 1-minute chart and putting that paintbar on it.
As for your question. No, the scan's indicator parameter is not # of minutes, but # of candles...
You can twiddle this a bit. You can have two scans, running on two portfolios (with the same symbols in both portfolios). One scan you would run on 5-min candles, get the KC indicator and store the value in the SetInterVar function. This first scan would not trigger any scan result. In the other scan, you would use GetInterVar to receive that value, and use it as the KC value.