Sandbox

SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = 'f2b20d1ddccff27c2684d2e8a97e56692d8a48bd4437cb4d6ed495527358472d' 
  AND token = 'ixKC0T72ITyJ6iiD82qCGStA7pWHYNYQS4kurLJTTDQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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