SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = '67a93713742b230c87ade82485f5019824de95e4da8bab07eb9109515f935b07' 
  AND token = 'sIZZ3kWuXD+l/wvv8A8UXGH+LhT+uSiaV4idvbQvtFg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00012

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}