Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f41b39f6fc8267ae203e00869c02cb100d90c90dfbfbc82bea27a04a123882a5' 
  AND token = 'CMPbp7hNj5jxzaEglyCEt5lHymjFrKaaANtkn7dy9FQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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