Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd5dd609c7d97c47f3436b375dd8bd1d1b7853156388a6c32fe024911b59f4745' 
  AND token = 'q+ifOoiLin4+1BUn7+LWhXxTmOZC50DlNMyVB6HaMrA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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