Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5bf693f0a4bfe89318505d3288377fa40c006cdc799480b024c88004f8fecf45' 
  AND token = 'NqFPiJTx0nhiXIkDbK5uaHYCD/tkJIgWb4v3VgoA2d8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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