Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '777838272112931296ec2f1c27c962124769291c9e743da3e1fe4221f8065927' 
  AND token = '/L7Ke7/69MAqnnmWMQX1BGu+GiNWluEi5t8fAr23mhg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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