Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cc3de05ebb3582a90883148e9517539eb75b3a4b53b5d24ea46f44718a7e86de' 
  AND token = 'R6g0hZxfvhCLQO1hWm5ArbvQiYar6hiDY7K021F07T0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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