Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8112d2f7bdae42cbce6189fb4cede9f30d1bdc71c7ec2a208e7ed439a4b7678c' 
  AND token = 'v2lBUkiZqvOAXqiEM/hnhmuGxyuThAqtns0vayTAQiI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

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