SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cc404481c0e488d6a70677ff7a529de54267135b15d2fc010214af1074607b66' 
  AND token = 'L6e9Kq1m9ru5XBjPFwVD4gJRzK/PeO2V6QEU+ypY3CU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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