Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c7041599c26a5b4f2e9e48420136e1dd61196edfda9eb7f6fb17da577724711d' 
  AND token = '55Ryv6kHSI/u46YH2/yRTlVbUQvD60reuZ3m67HxYLg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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