Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9f358edd04e24dba204d278fd4c818a919aa09df8580ececd5a493b22a55d961' 
  AND token = 'EzPEmQE12dIaRQmdSB4SlHV0+T3PbGdji0ZEaXjOUxI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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