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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd472512837ae4416d8efb5b4dcc85ab07eed415d16fa6cad9169b2f956ececd3' 
  AND token = 'RToH9AqU/YoVHq2LpAWuowVo8LK0euGc6ueLmiu2E68=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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