Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '70cae85acc997cac4ccf17b37c3c1aa91655a369fe1c25f6ea54bd18118e36d5' 
  AND token = 'wmIpD5Eu6oB0xqbimllz8AbgR45i44kmWMmxZOPSe4U=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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