Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '094c11105fbacc28ae89694ced1ca3706a20234ebcc9aab966ae0ddd0b44bb4c' 
  AND token = 'SDNur00nicIz9fBmt5cB+IKBB6C74CGnjhykU2BoWUE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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