Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0a823f4bc2123ff9373c20ceab9cc08ac274ef0357e6693b3b2ed616b7f3253f' 
  AND token = '8bNGDIz/b/fAGvOBs3/E6/dpM6JIMt8/oRKbWe81a2Q=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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