Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2ccab461cda6d9d61e9d58a05ffd396f51678d9f48fa4923a207656b9bca6219' 
  AND token = 'sTO2f2Re5k24wUYuimw9lTKwtSo201QcWPl4pqgZsiQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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