Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5e963f111195cb827b63a17d884b20f768a40b8cbeaa1bdb214bf148fefd7550' 
  AND token = 'mLPGsoEZtsHUDYI2WoUL76AaXP1KGTkpUkiGw1HEkyw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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