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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a72b6c56c0923a96c721863db21bcd28c85f9164754ff18155d9e3102113c761' 
  AND token = 'pP0XPoIt5zC3J+O9nKtlmX4WYS5t27+BVXE1LY+2rUw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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