Sandbox

SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = 'ab04dd29a3ef9281295c9823b8fa72464b5f646bd596409c655f2f00d61e949f' 
  AND token = 'Hg6XWaJReE5NRUrBSrXy/+bvc3RGOjx01Mowl0rEaxg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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