Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '660028401c560635e16ade196915bc31dff360da4bbb61dbde4b05123fd8f45b' 
  AND token = '9VlwHraIf13A4vveAyVYOslWpDOwROcvi/CMdYMnYGU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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