Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '13edaf87ff12cd4e5ef30024c7e6349eeac596676306b048bf5f6694430e40df' 
  AND token = 'MA5ZTthftAdjfMpNxh2tB5BmaYez16/U34UgjQ+e7GI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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