Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3ce34969648d08c5e1dcae2e691db4c9c389a1d2ac4aaf3af6506c34a9f3937e' 
  AND token = 'qOq0bmrawukCn7GSaHN9EeNuDkRIBOr82efySHSF+EE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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