Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '141f277b3a57c198aee0f212e9b55945f59bee1fe3fd501a92e03758e5ea1191' 
  AND token = 'Zm1O5w/qH0YWoYV4ShVdexhpAuZy5MX4L0lkEaY2OSM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}