Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0db56f7f9d77e125b5dde50c6ff611ec70c98196214b496a6f84fa58ad985fd7' 
  AND token = 'Y+vhkjewsehUjC5yawrz73I5Gb0z/43WRE9j5BJwdks=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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