Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '690baed3ad8060a4489dfd61ad52c5090c47d168c99fa5cbe48f4e58ab3804af' 
  AND token = 'vIouFanWyaHDQb/l5uI/tocQZyB96B7q5sgn3kmlZ1w=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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