Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ec42e1d4da65e42e00853755c7bbd7970fcddab266c6379d564f94baf2882a74' 
  AND token = 'JLlTPUPgwh1HzBm40EB79R4kIVzSP+C5BJAnBt9Hsg0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00050

JSON explain

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