Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '06bbb7b75e0a5ad8a559dcd4270594a72a461aa21126567c29d8c6c8f16f1879' 
  AND token = 'cvhsQe/qrWWslTnEKnhFvYTFRQt8N4c4S1ie1aTrQ0M=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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