Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'abd402e3c9737ac449b3da00344dcf076413092cddc546b3a50eebb3e257401f' 
  AND token = 'AHrHEzhV/JEVHAxJX/boaQvcXVIJCbmoY3uA3ygDleE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00051

JSON explain

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