Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ba17d9c2c289d66ea3fbf3494865680c01f0d0eb00aba4c6a11f05d6f537046e' 
  AND token = 'sbvQFpayddczWtTfkVvYEyM5Fg8e9k7ZwWqYmw5bxYA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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