Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fd8d2c080355bd3f0aa00b11dc9541a24d626affd5dd5955cbd823b84b7f4630' 
  AND token = 'rmEJgt+9l8YrDZpJ82D2ujbQO44mjbXfYv2eujDdE0s=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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