Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '588ae9f5bf97bcded175f5cad4664976f44a0259a7bfc0b70b290cafe6798df9' 
  AND token = 'Iyp/CmldpbwNIjD5Cd1mBj//wIk2DPryLXgBrpBRxJI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00015

JSON explain

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