Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '169fa1e5882f5fc8b531246422a301231bcd83b8506cdcfe223efd4a54f89e04' 
  AND token = 'DcISaWho1e5lnc92ND1+T6CW3luOvGqN+xBYnJXzsW4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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