Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8b59105fc1776773734ab4ee5b7c730f02eadb6de305a0a4c347d18438315e4c' 
  AND token = 'oow6rGN+9vLfFgsbTxnS8zTOZPGboXpEiQgASXGu1+U=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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