Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '9171243aed951a405663a5eeccb26cd537cc5f30b9d2d42203853858657d7cfd' 
  AND token = '3CgTyP8iTjdSlV9t1h623QoYUPnRExXq23XQUqjcLfQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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