Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4dfa782c0603b6a4ad23a0645c38c91745cc0f010eafa617459f28583b833a3e' 
  AND token = '3xG46VmkLtX24O1N6D0oRdcgQeQCT7HAaIX3lAJ4z/4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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