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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '05fd8abc8c8fefd0f4ff00d348dbd6284189746aac052f9d6aba7c6a5d398fc1' 
  AND token = 'GJ7h9uioUfrnUKX62ywGEFgakv2JKQItjk3yu7ZFw7w=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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