Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fce5ff1cd5e1a96faee02f7ad8017ed850f62c60d946fd06953182b215d7d631' 
  AND token = 'i04HondPLKe+PNW/1kOAxIfQzL93KHtpFPWdbCoPXSU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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