Sandbox

SELECT 
  1 
FROM 
  q_lock_keys 
WHERE 
  key_id = '546d9b390e5fc0afe13d1625c9adfc04fbcd8e4fa3f27d4feae610fdc4610920' 
  AND token = 'cVGl+/BKgk0XdVx/Ns0AMXztdYrdi9L40JmE3KIA6Qk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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