Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '962b3bcfeb1f18fffcf326da0899034ba26e5ef4e345b78c16099bc79e252de2' 
  AND token = 'IHY5m5Yvi4riUANJ0K187XqLnZWRDp4DQUMnP3wwaw4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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