Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '149cb97ada12cb700a494b3b643c20949c605e89ad041f535429faa188e48cad' 
  AND token = '1Qx99qULng1/R93yPJrripWPxDpEk/BAlrT4mVZoneI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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