Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1fb6ec1dedb7d1bc439fe69c56c1b4269b322311afbe09c9c9c86a1a449893b1' 
  AND token = 'dq6oWnIydx6Z5l7i9yUBCt0k/B2EPVKBXxvapKVFrJs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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