Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fe189300f2b56354560d77f645eaecf910706b0937f035e649026fd148107170' 
  AND token = 'a3d3y/Ff7KH/zsxuehMDRv59LqTOnkcbtijbdM7nktc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00062

JSON explain

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