SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd85d63f49c116334fa3cc8bed27a1c6b2842e6ef0b1eddbc7f8fbaffb939e89c' 
  AND token = 'tgjvWJJs8xPdyj/WXTPpBAM4auUKpZ0C571qWY/eCQA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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