Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'aa7ad82aace2113ae7aac69ad8528ae8535d3dd76eb7713d497806b77c097c9c' 
  AND token = 'ceyNppadum2vj+ik32BlBbO2KrCgncLEIhBXlGHId7Q=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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