Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6f1a004b8633d314b7b8e6508eef02891c9fc3790c72e63b8c85b2a7dd42aaa8' 
  AND token = 'Zx+pEaqi0DDAZWq4qidHXwToWddP8zPY05xFkzKRqRE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}