Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6a359b6d9dbefb498960013034030efc8e446f7c81691efafc392b611c4cad13' 
  AND token = 'a0x/kHaAqQpJ723zE2bY57NIUdvelkG8l79Jqmvebsw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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