Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e65d9131bca0cdc7bdc550464beb90a17f4255483a5280231c280ee401a3e76d' 
  AND token = 'ibAD3GSlzfYqEkMqkew9HJp4O8rbv2x0TL3kt8CdIo4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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