Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '739b87897984ecddec28c9676d9a3117536bde5d8cde3c84ae8485f2d0019e85' 
  AND token = 'o2tl8zZT77SR4vvWkdcsxYj7eD8lZeZBl98R5JIegzk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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