Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b81b06f11c666ac274d86c77c6669216986bd6949194ff2eef200b48e896a233' 
  AND token = '09aasDLWEnGSN8itNZJ+n7Xu8SOd+5Y9n5WKpb7VqwQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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