Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ec09b7c0a1135584f5b7448250463e780718aa3fb1a9481347b6f0659e30fa7e' 
  AND token = 'CeF8cS0QIYCNE9MbiBc7IfGde55e5qXQuq16i/VlyBI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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