Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3d12379c8a1cc17231ccdafe7b3241dc71ae2d48d50ada026d92cbc78d454175' 
  AND token = 'AfH8NF8Fc64ukqPFjmS0vYZieHRQkPT5eXkb2T4Hsws=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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