Sandbox

SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = '0c2c890de61aac94bfc41616478d2713effe8918fd199cb11346668fcd675aa5' 
  AND token = 'Fcleiivv+yu+W4E7w1RIgh+tikkdf4xPwqkr5EfRwis=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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