SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'dbd1b96d22950a08356031e94b9882fc7b6595f6f63b04fad0fbbd07f477bc5d' 
  AND token = 'yXJroz3KMYlGY/dZNNVTEMBJrXF0SCnshQ13wwWy/bk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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