Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0c12570b6804a3208e1adac031bffee6e80656007fa54c5f7dce1a1220ed6ccf' 
  AND token = '0bQcHuN/22gO6neH5ReEo8bbsfo3ssmQY1E+AxXBflE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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