Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e94ec679a10a91db045ca11a8694ed492d7f7fa65aaf53939da201cb66e21179' 
  AND token = 'ntiGseZImrjSlrEYHnV7pDh//v9BvTpo/RT1G98Pq2M=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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