Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2d96dc27f58af231c23768d7028c460665633b2ee0ee4e3077fc849bb6ba8112' 
  AND token = 'tHlUWXYT5PkjCDhvbV0yuyaV69Om8Vd9A5MZUg3rqqc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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