Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '417d341c1fe5f66bee87c36485b0c8c2dfeb78ec4f269c879f1751f18128cd8f' 
  AND token = 'kOnH0zZMjSQ8O4IFp+Mn0FeYDb/Su/N1gB13Qfrd8lM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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