Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7083f342ca995c59d76d8f33e61376522429dbacb3bcf5c49c32e0d0518cc511' 
  AND token = 'nd/CyF6Qz0bwf1635AqZhWX2SbVm+S19njfRKPXOZi0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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