Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1d7ed26d1466f75807095fab2061eb98950860c531e1125ad0b567174f722fa1' 
  AND token = 'qzwJrBqbUAVsAKZGA8XbpQQu0ubQdb6gtHcEPXTrXCY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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