Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2e4da5a03c85e59e441aae9f07f2bdbdec9763e527df7cb3002a25b5a3a48cf0' 
  AND token = 'vNzyvJzZaekrZWBYAhQOeaU6z5YrPfNmTSMf9vComJc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

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