Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '375a0dc402277143ca81722abfd5d4d75cf9655c519b7566c61ee21147496cb7' 
  AND token = 'zDIxSTm7JFLoGMvSlrBJRlGD5XiVbfinGr3fu8ILY5U=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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