Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'aa585420a8dbfa52e078905f13a4c69cec1ad86860ca0995722156a99b19829e' 
  AND token = 'uIaZQL45/+dz+FRhiq9YeEr5fm/n7hHuf8jMp+UCHk8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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