Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '95c5ec4a3ce91894c76a66a6b741c047a4a88103459a7bfcb790f7a76714016f' 
  AND token = 'CSJU2fZx5/cQxNJRcIcG1DB7cAC3H5T6j3F74C/647o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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