Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '60b38f9293d652175afc5b2d054cd157c37c1ee357814ae74a3b29d3f12d233e' 
  AND token = 'f60Zz5U/sZngB27HXMznI7pGg674BBXxGQlJokbdmOE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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