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How do I connect to an Access Point using its BSSID, SSID, and channel without scanning the network. I always connect to my home ADSL-wifi-modem and don't need to scan.

Instead what I'm seeing is this:

nl80211: Scan included frequencies: 2412 2417 2422 2427 2432 2437 2442 2447 2452 2457 2462 2467 2472 2484
wlan0: Event SCAN_RESULTS (3) received
wlan0: Scan completed in 1.264398 seconds
nl80211: Received scan results (3 BSSes)
wlan0: BSS: Start scan result update 1
wlan0: BSS: Add new id 0 BSSID 80:26:89:c3:6d:c2 SSID 'VivekM'
wlan0: BSS: Add new id 1 BSSID 80:26:89:c3:6d:c2 SSID '\x00\x00\x00\x00\x00\x00'
wlan0: BSS: Add new id 2 BSSID 00:f2:8b:42:33:f3 SSID 'AmwayMobile'
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    Please help by making the question more clear: What OS?, What have you tried? Where is that log from? Please edit question, so that we can know about your situation. – ctrl-alt-delor Nov 9 '18 at 10:13
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The operation of scan is necessary to connect AP using wpa_supplicant.
Even if you already know the AP's information to connect to, the scan's behavior is required.
This is because wpa_supplicant compares with its own AP list when connecting.

The relevant parts of the source are shown below.
https://w1.fi/cgit/hostap/tree/wpa_supplicant/events.c#n1140

if (check_ssid &&
    (match_ssid_len != ssid->ssid_len ||
     os_memcmp(match_ssid, ssid->ssid, match_ssid_len) != 0)) {
    if (debug_print)
        wpa_dbg(wpa_s, MSG_DEBUG,
            "   skip - SSID mismatch");
    continue;
}

Perhaps you are using wpa_supplicant with the -dd option to debug output.
You can check the related messages at the connection step with enable_network.

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