Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'dec7b9f58230029912ac9ba1619509d3bc9c1d6d4d07188611780d9f10d81cbb' 
  AND token = 'KqTU6hgZkfwEojAKeOq+h0xNoibeaX2Wbv20DWm1VEU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00089

JSON explain

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