SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '149c912337d513427f3f353a5f09d07d79c96b47ff2c956e6e2ecd625b9c7014' 
  AND token = 'SunCxD+hSp5udXX5h22VZJ0eTpt/B/JlbjpY8xNA9ow=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

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