Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '56931da00e9272706b916d7082ad205f75ae9bf6a6c7a9f99de703e86d36f54b' 
  AND token = '/W6AOnFQZU7TcbhSPbm+hQyqn715AdNhuoju1KBgI9U=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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