Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2fd778d4a8b380d3f48f67a57cb9718a41cb9d9b40731a669b063337f535155e' 
  AND token = 'GdKJgCEqOubOuZZM5scq1CfR0r2ezJqsPdrSsJRLKgQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00014

JSON explain

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