Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1073c134d455bb9c160e246b8785146ca9ba343eeb15a323ba160440d5b8a281' 
  AND token = 'D+kTePnE3h0P5NaWEy97d10ppE2zDbaG6bDrI872aCg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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