Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7565e52b8fb10894f6c018629c502bf321654e518abc531911bcc0041ea8fc94' 
  AND token = 'W0+ft0T47W61jRnRo4w5ILzBdZY/D6VG3Ca+yCEbMMA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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