Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2893abe673e3b5653c804703f2e0010174acb083cf98c98e09eda75517e512f8' 
  AND token = '4Ej+h4EcLZz2SAjhVwFViE6HXe7GcTEfkergLf+GuWQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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