Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2eea37ab7bcece5bbe95edfe0e31a8f254a8463a73bd513d31d4bef1fc7b10ef' 
  AND token = '4icqp2SSLqaHwNpADoNE/euHvSeP5o/i71u5c91BNOU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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