Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8a584a7e171742acddf42bcde9111ca17a4b4bccb23ae82095d0f4e02aa1f149' 
  AND token = 'Cvqm7AFdD0befP+gGg8tjBqxn5NU4T2rMD0lWNsgUgQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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