Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'de4016929b5e6a96a09aeba247436ea45dda7802352e02e50d42330213321cb1' 
  AND token = 'NCGqKdX2tOcAvJPUsJ2PT9P2HNyVdBsa4aX/EkBSFh0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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