Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cbbdd4f1d277a53706c16784fda7284031f2e24512587a84fb9ebfe23552bbb3' 
  AND token = 'ZpbVvL/XlfoV2GcASLMXNjsFrJijcci1NVcTVVSsShc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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