Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e86f1e0d16668516f9d570ecd31409a930f8ace0ac2307f2de1b43a6c829ef81' 
  AND token = '19zxDzzFw37aLpXv3FCdtEZT/e5cQIoy5DWBCc1BuSI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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