Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '25a7c72acddfc241d266f67184cbd2e7ca4580aeab25465a6cde1dfeeca3948d' 
  AND token = 'v5RnHpX8z3tk1MgZ57QYT2XEhA1HuLwbbkWz3bbEvyU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00047

JSON explain

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