Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '832e7d227afa2c993a68d06b67150c11f13c3a9c275a0148a299ee83211ee91c' 
  AND token = 'E59yRlkGDhCnJGxnXIGUUe6gSDnhLsM5u6JCfFuY52A=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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