Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4453ec30cc0e33e7e2b8da98f14e9823b8dd781c80a67a09d1e622a2c700994f' 
  AND token = 'lKUF4APWDx1tkhDi33yXCSD/tcf27XiVv/3SlS9OyuU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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