Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b67ac368335b6e058c915d15527280c9581134874a63ce2fdebeda2dc6158915' 
  AND token = 'KSCoNZpRycULHhM+qECi0M8CG0KmEHjiUPJJYpgM6J4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00050

JSON explain

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