SELECT 
  1 
FROM 
  q_lock_keys 
WHERE 
  key_id = '85f01ab9b13e32d3ff864737c2a327b6ecc8cd89a2acf4f1a92a3ab582816644' 
  AND token = 'F8m/o/nF9DXouTZ/F/bd+SLvzqVC/XfOyh/mlJ5VolM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}