Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '55eda1b9bcdf0bbcf6f7e2fa7149b55afefba269b5e440dab4c2528a05866615' 
  AND token = 'fkcoHf/wvUKIcc4VdHYhaZFanKzkmSwOZg8MGiQIWh0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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