Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bdbb342b23d0d085bf168fe32d6e7142b9269b9074cacd1fd8915b58786a1d5f' 
  AND token = 'MmMI/o20IQ2BQId7621RxbGAqCtgXrQq160MexqbNAE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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