Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6aa9869e5b363b25eea7398026dc2fe40fdb12e42720765824ef528c64135466' 
  AND token = 'xgiDKbNh1Jts/s6pjCg5v3SmOoHTiukoRMXB4XMrYqc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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