Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e117ed6dba019aa3a13ca0d8cb3db83f1d698d3fff848a75684cd5454cef037d' 
  AND token = 'ugKAY4r+nGc5j3ev1oMOgpBVP0lv5tiRxopQtQIYO8o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00060

JSON explain

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