Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8d9b54203732a64ac5e18f34eefe0d6bf476371f2a13b657f5dc6358a01bad94' 
  AND token = 'rY/7UxLVZe1i2fs6U+hMk49S5KHAE0bAaub5Ptm3TdE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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