Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '65aa32eaf7d149fb9b619884e060cc276cfdb847558840208e2c11c32551a6e2' 
  AND token = 'uUguM8tT+uGy6QS+0vdmO5eCBPsvERy36nlPVrDuLs0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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