Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '632d2ecc4dec17242ea9d35375edb9df61923773a418fe9b7db2ee363239a204' 
  AND token = 'BYhL+72SoWeCyG6NLo0GzXRoOMKIGHtgXPqW8vabG0c=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00065

JSON explain

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