Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a123f7495ac0b639e66353affb4d513b5c095c9c92113f7f79247dfc52e926f5' 
  AND token = 'ktDKUdDKQQW4aquQXci0nyvDEEkLLIWez/2juDWCw5Q=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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