Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '52834be36071f28c4136bd157b69a4b0f6f412aca086032b0043cecbbe0b4e4d' 
  AND token = 'O5k/k+UsE6eUGoLC5XLHHxs4452Crzco4Opfi2NoxPw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00050

JSON explain

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