Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b922768fd94b1752feb3b773f9154d491fbf0420614b37c0835a924e8e18f02c' 
  AND token = '3fsqvNCWXax/5UEz6Nr8qYrY8vGzGSTMxBl1Ew1FbmM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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