Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '02f1dc4d6447d74063145b79840d0fdb73962747a36a0f022ce4ff337e049fb1' 
  AND token = 'i2ilsP/5uerW/xZd0yQbJVQBHWsBrYUfEumhKn5Ocdg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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