Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '19bfeebcdee2875c4f803e549f1d15deabe105d6ed31ed407fd438177e73cf6d' 
  AND token = 'TIlVfpS1iemheODwQ7cwhbNy1hZwmvyRKBmkFkhMbiw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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