Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6043e235e6cba694f5985a5dbe3aac93c815f6a94ce2b2828e25aa61230e9026' 
  AND token = 'AZ9pbo3vQar0Bogb2x3hKOmEmIHgJZqCmM9YPfG57PM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00051

JSON explain

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