Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '890b1f62631e19923206e6964c2e034df25761dc6f6654d75a72aa48d44bce31' 
  AND token = 'iKCKPQ9O4oE3OBEgGrRAee6TGmSlXeqdBs7sKPhxmdo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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