Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '35a724fb6013ed5f21a12933385463b2939a346dc70e2dad3e7d3d0003eb4a3c' 
  AND token = '1kuicoKoc4onMeA11GNqf3Ad7L3SD/zfl25aiIODLf4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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