SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = '2fddc5f7307ffb515f43622632042e15b925ae0b585dd03f1ba26d94578f6dbd' 
  AND token = 'CfFCEK8XQHB6pDAFFlrmk9e8/DWBo9f+uDx0RdPTqwI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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