Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4b89e28c8f5d3d1373e51b9ae9c6907971000d9b896b0a473a0a436abcc091bc' 
  AND token = 'Srzw7I1QUC2v6pAf4WiYz8adp51mP5TYL0l1LgndvZw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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