Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '90ef34dd4381d42945abda10c5fb4e66c4dfe4f1ebc868651df8763cf8e7232f' 
  AND token = 'sbnxXv69snaoT377an87Q92SLqV4ulGSrgF4PSohXEE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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