Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1bbff56ff03038ed6bdb4bfd931469c301e1869fda7edd87db09fa19f04c0d91' 
  AND token = 'fHYaF4hyhKZMVWT7gdiUtueQ5DQJehKs1CdmRazxzNM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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