Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8b32137973117732167477b6d760810575d179dccb981d2042415f82e08debda' 
  AND token = 'NYBoDV1fyELiheMDmAFccrlJRdLIY4uJamYJMADmX+Y=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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