Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7052ad7799b45c4f8c30b6ebe5e4b75fbf6494f38405db6645838e6db4f1a2b5' 
  AND token = '/lNesPseQ+J+LcGkTeqaZL0EEC6La0amqJSv9kUvlWQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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