Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8479b912aea10b671066b638f497577c23eee7a0333c489cd485854b9d4ace90' 
  AND token = 'LxBdITPSqnX++6dcpasGFo94ofs4FzNreeZvjcre0tI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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