Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4386c1387ae3caa0683552f52ceec02ef5e837941d78ca85e3065b843a2d8569' 
  AND token = 'vbB2qLJfzKQayYH8whEwwlqETIVzMc92JJ70j3ck6cA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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