Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'eb6eb7112b7822b58f21f12014a96e609651deb274a258d20f38a3deab4e6c9e' 
  AND token = 'jqGSUsDRxYTdF2HXTsIh7tDi9d1B0buTJxLncoKgUes=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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