Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2726fc7d06373eeb3d5b05890d07060722630a8f612344cc3e90065be26cca10' 
  AND token = 'q7/DcyCtp9NrSYYEIMgR3RGzoPXNLYfUoI9MtYZhyRw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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