Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '920ecdb1b5a28a429deb68912719d97ba426a41320fd5cea91bb7629aea1a80d' 
  AND token = 'FxMQgAW7gRskCvi22FX3mo2Pj+BHbuf/luUxJazuMmY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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