Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '442d6308a7b7fe2f5b5baf160aa3614678ea2e5a78e7cd6bc82bff56d05c13f4' 
  AND token = 'zuPq5LgcCAhxE7l+lPgiyI6t1pw4ydAZaD0PlvJEQUU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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