Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1c8ebac0c77b3179911b0dc8febc5fb9baf8bec89ac89d7838f5dcea2adcee00' 
  AND token = 'QmLobLPb0eG3gkDgkyDPk8uBShrV/c9q0eHLCxgrwqI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00049

JSON explain

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