Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '74690f4d5d83222e95d417394fc44f718526d979473a7a2bf2c34f4bb731ffef' 
  AND token = 'NfqZWu9l+f1n9HUg5bj6fZHwfP8xvTYMeyWl171EiiQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00051

JSON explain

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