Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '333a1e6be32d0071871e307e66d62533da747e7ecbe6954404c069e27a1132fd' 
  AND token = '9oYvXGQ5+cvD5e7KTM1zmZNF+XXq/Ge04p2sYTwFroc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00079

JSON explain

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