Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd4e36810edf8a484faa78ce68e35629911898287507be0316cd6bd043d61681c' 
  AND token = '9GNR1GleUuv3XXrBKf4AZORnYZao0BSCMdJNoFo3K5c=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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