Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2ad437163b772585adf230740b43d7ed217e2f50abe09c506893527c83626a39' 
  AND token = 'wy68S1pGzOzVvZmlzNryZl8e6nB7f3Or/Uc8QlwPQyo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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