Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7e496531a8e6ad6a6f8b5249013b5b166a9423851d43116cbcc07e512481e607' 
  AND token = 'buOOuBH0YiXAIznNgN0CENom/99GyzBOfKPAO+k8hC8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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