Sandbox

SELECT 
  1 
FROM 
  q_lock_keys 
WHERE 
  key_id = 'acceee83a48484dad585560066a1856e76aeff8286665a90086c7be7a029fd58' 
  AND token = 'QRdWen8B6iJbxrt2nRr9VzrzDRx+QQeeDvQ2UwZO3lA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00294

JSON explain

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