Sandbox

SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = '4a617612b0db987eaf2b4109a7957484c89b73c6caf7eb78c69ff12b735e725c' 
  AND token = 'AnT0nPGwCdLL5nNX4gUUiHkDibChdZSppSUp9ujEDi0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}