Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '08dfe272e3a4eafcf14eea9a8d59dd6fa3a54d9b703942b6a24e3e17ac8f8a53' 
  AND token = '+kte3hubqZXdxV/h3KAopgCXwaU5W27LpyWxLlz0PZc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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