Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'eeb46415a54ad89b0e469acc67d113583b570872271f270396826dd9e8f63c19' 
  AND token = '+5MKRqD3u7ej5uOTYCIpVL1tFgfU1ot7u9LdKtSXfgk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00042

JSON explain

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