Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bab8e3092bc2d143bc3007635337a995c9f210a71b56efaf9c7442edabfca5e0' 
  AND token = 'fPVIyISbhrsYK8MTxZ4HAwgUgXU6TJzLlc9c6a+SSqg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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