Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e42800d2d2aa77d8f2bc50905b5950296f1ff0ee9a76943db1c95459a9f3df58' 
  AND token = 'o3jAzjxO8y/wr1GUQNPK1RheHI3KaoXeHxLECtC+0ws=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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