Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '702e20a5c933d9991b23ba442a5d53d129d10bd47e7fd5e6af5e191a0f09bd07' 
  AND token = 'ydOeltOyOGEdoNkaTye+NFlkO/CWbjNkg76Imaj8ZN0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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