Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9357c873ef217dc01baf74239c1ac5f6cc4147fefdee175770d39833afa7cc5f' 
  AND token = 'Om73tKPAZCsQhYY9H3yk1GQfMuaHIOqL7oevi6BkOUc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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