Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '474fccbea2aeea7de95d6df9e4808c737feae6be777d0d22735c2c1a35cbe26d' 
  AND token = 'ZzN5wv2PQz9UDXBycM4A3NvDlHV/PafXSKr3yY83NgI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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