Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '287faf0bc7e6ac654b30dd84a68e69035fdc7dc929b029b148dda8c981cfa26d' 
  AND token = 'jAp8r3tq7cihFzu/aNQW52Z44WVgrSFN1dFU3VShQUE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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