Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '24dbd20e66574c75b7987b9a8cc272ac77a66f42203ffa210c1a373d11b8ef24' 
  AND token = '3+AZmsinn7SIxqk94+OfLKyqhDVoopDovH/TgbQIfTQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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