Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '049d60a7246a64559cd14953f3607428c3c4b2bda712947cd686c64984efd806' 
  AND token = 'e6yHlGoJU39DnVZQ4KzgkHuseH2kTYa0YdFUhzTaytk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00015

JSON explain

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