Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e4fd8e39fa005608359a4c889514dce0941ce8a1b3562c2720fc7305de016f19' 
  AND token = 'jOKILDLowBX7844n6Sd0yNIvApYXohtYBk+FEDZHb64=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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