Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ed65a7d822becf265ee9282f9a8fcaaf85ab1ba20908b6d9a8421cd0aab140c3' 
  AND token = '2sBlz9vc0LC+d2Tt5WvJLOBq6kwqUMHLg2N2R8ZW2xg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00015

JSON explain

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