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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '033eaf8ea3e33d536481137d4fea4a774b9d4b44b29ba6dfafc0225acc51a196' 
  AND token = '3+1ti62sDbSb0+diavGMxV/6doiUe81/bR+7EJ7h24U=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00058

JSON explain

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