Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f0f418cb53097c59390c9b93204c2c9b8bee0c071f4c662b3978bec97c3959d6' 
  AND token = 'UdGI7WFpbqR+rV/Jw+S6qEQVqstfZGJX46n97qj+01M=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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