Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'efe13551fae06679075b68a3d02753b0445fb03acc0dcab63eeba0a073889c47' 
  AND token = 'hEMQd5tNOpjih3/94OteDLWcjXRPjqK2DRyaaDUxY8E=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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