Sandbox

SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = '63c209d1f6bd3893e6bbba49f098803ebbe3e72a18b2e0d819bffc322e38cdc7' 
  AND token = 'Hdt6pcTa3VQcygaAYFacc0y8Od6AmDWMA5mmbcaMqE8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00042

JSON explain

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