Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'dedc3eeabbe2785b617db972a9588e2d5f323a27ed1f89b5fe4ec65011c7855c' 
  AND token = 'JWonepZIc/pBrEvsKyvvyJ0DaxBSXttaosuU0TX+y9k=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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