Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9d510f3d4febc45f1549a2664151b203479e4d9f1b16b46a6eac588e1b115980' 
  AND token = 'a0qPaA6miqEvKK5syEVJsV+r5B18fm4k1ZfbzXKRKWU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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