Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5439bcb203279ca62932a7627a7d11f8eb0261c52c8652c33ff4d5babba45770' 
  AND token = 'r8Q4Wm/GXb6KNLs7lSwSbiOayGcNJsKkjoJLlx2M7nc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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