Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f577de571d12b8f1c67046898104343cfca9ef476b828cb4a8635813b651e44c' 
  AND token = 'HDSnu4Yo1dtZKiQ7yef789Vyln8JS2q70sDd0iO/rpU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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