Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '85db9086ea29bd390a2327e0a6b712d11daf52fe5c9cfcacfffb6b90d9b403cf' 
  AND token = 'dYIHYV1lGyezJhpfMkS1lmv0YD+BXyblAvUBPNozaXs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00048

JSON explain

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